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Data recovery tutorial-MHDD user manual

MHDD is Russia Maysoft company produces professional hard disk detection and repair tools software with many other hard disk tools software is incomparable. All of the hard disk MHDD operations to fully exclusive ports and does not require any BIOS support, nor does it require the use of any interruption, all operations are performed directly. So whatever is detected hard disk installation of OS, effect on MHDD is the same, it is able to independently access the hard disk drive, including from the first sector to the last sector of all sectors, regardless of what kind of information above.

While MHDD can not depend on the motherboard BIOS to directly access the hard drive interface, but want to be careful not to be detected hard disk run MHDD, be detected hard disk preferably as slave. MHDD at run time requires logging data, and therefore cannot run in write-protection equipment, such as write-protected floppy disk, CD, etc.

MHDD need work in DOS environment, you can access to 137G above large capacity hard drive. MHDD runtime is not the "menu" to choose from, it's functionality is in the DOS environment through directive enter manner, or by key combinations to automatically enter command.

Run in DOS environment MHDD after shown in figure A-1 interface:



The first line of the screen the left half for status register, the right half is the error register. On the left side of the status register shows the status of your hard disk, specific meanings:

BUSY hard disk busy and on directive reactions not

WRFT write failed

DREQ hard drive needs to Exchange data with the host

DRSC hard disk analyzing adoption

DRDY find hard drive

ERR on the back of the operation result errors

When ERR indicates flashing, the attention to the upper-right corner of the screen, the error type is displayed there, their meanings are as follows:

AMNF address mark errors

T0NF0 tracks not found

ABRT directive is aborted

IDNF sector ID not found

UNCR uncorrectable errors

BBK checksum error

In between these two areas, there is a blank area, if the hard drive is password locked up, here's a highlight of the "PWD". If you used the HPA function modified capacity, then there will appear a highlighted word "HPA".

The second line of the screen is hard drive parameter row, the left shows the hard disk of the current parameter, when the scan to the right shows the current position of the head.

Implementation of the "help" command or press "F1" key to view the specific command MHDD and usage, such as figure A-2, A-3, A-4 shown below:




Use the "port" command to select the drive to be measured, as shown in figure A-5:



Press the number keys to select the repair hard drive, perform the "scan" command, as shown in the dialog box A-6



The tools use detailed MHDD, and command explanations

1, MHDD is Russia Maysoft Corporation of professional hard drive utility software, has many other hard disk tools software is incomparable.
2, whether to CHS MHDD or LBA mode, you can access to the large capacity hard drive 128G (accessible sector range from 512 to 137438953472), even if you are using a 286 computer without BIOS support, and without any interruption of support;
3, the best in pure DOS MHDD environment; China hard drive base mesh intohard.com
4, MHDD can not depend on the motherboard BIOS IDE interface directly, but to be careful not to use the original Intel brand motherboard;
5, do not need to run testing hard drives; China hard drive base MHDD intohard.com
6, MDD at run time, you need to record data and therefore cannot be written to protect the storage device (such as write-protected floppy disk, CD, etc.);

MHDD command in Visual FoxPro
EXIT (hotkey Alt + X): exit to DOS.
ID: hard disk, including the number of hard disk capacity, heads, sectors, SN serial number, Firmware firmware version number, numerical, LBA support, DMA level, whether or not to support HPA, supports AAM, SMART switch status, security level and switch status ... , Etc.).
INIT: hard disk initialization, including DeviceReset (hard reset), SettingDriveParameters (set hard disk parameters), Recalibrate (reconditioning).
I (hot-key F2): the simultaneous execution of commands and INIT command ID.
ERASE: quickly remove function, each delete units equal to 255 sectors (data recovery).
AERASE: Advanced delete functionality, you can specify data in the fan section-by-sector to complete deletion (slower than ERASE, data recovery also invalid), each delete units equal to 1.
HPA: HDD capacity cut feature, you can reduce the capacity of your hard disk, the BIOS detection capacity reduction, DM, independent of the BIOS detects the hard drive capacity of software will still show the raw capacity hard disk.
NHPA: hard drive recovery as a true capacity.
RHPA: ignore capacity cuts, shows the real capacity hard disk.
CLS: screen clearing.
PWD: password for the USER to add a hard drive, up to 32-bit, nothing to enter to cancel. Locked hard drive completely unable to read and write, low cell, partitions and all read and write operations are not valid. If the password is successful, press the F2 key you can see Security a followed by red ON. Note that you have set up a password you must turn off the power after the startup will enable password;
UNLOCK: unlock your hard disks. First select 0 (USER), and then enter the password correctly. Note: option 1 (Master) unable to untie the password.
DISPWD: unlock password, first select 0 (USER), and then enter the password correctly. Using DISPWD must be preceded by a unlock UNLOCK command used. Note that in addition to UNLOCK and DISPWD command can solution password, there is no way to unlock. But once the password is forgotten (or entry errors), nor is there any way to unlock. If the solution password is successful, press the F2 key you can see after a Security has a gray OFF later. Note: option 1 (Master) unable to untie the password.
RPM: hard drive speed measurement (very inaccurate, each measuring values are different).
TOF: as specified by the fan zones set up image files (maximum 2G).
FF: from image files (maximum 2G) revert to the fan section.
AAM: automatic noise management. You can use AAM (automatic noise management) command "what you hear is what you get" type of hard drive noise. Press the F2 key words after if AAM would indicate that the hard drive support for noise control. Type the AAM command displays the current hard drive's noise level and can be immediately heard the noise of read and write to your hard disk, it is necessary to pay attention to the hard drive's noise and performance is directly proportional to the larger the performance, noise, and vice versa. After entering the AAM command, press the 0 key to close the AAM feature, press m to noise to a minimum (performance lowest), press the P key can be redeployed to the maximum noise level (highest), press the plus sign and minus sign can be freely adjusted--hard drive noise values (values range from 0 to 126), press l to obtain the noise and performance of intermediate values (on some hard disk if you press the plus and minus-without the invalid, to make the noise level is the maximum or minimum, you can press l to take noise intermediate values), press the d key indicates that close the AAM feature, press the Enter key represents the adjustment concluded;
FDISK: quickly FAT32 format hard disk is divided into an area (in fact, just write a MBR master boot record), and set to activate, but also need to use a full format FORMAT.
SMART: display SMART parameter, and can be related to SMART. SMARTON can turn on SMART functionality, you can turn off SMART function SMARTOFF, SMARTTEST to SMART for testing.
PORT (hotkey Shift + F3): displays all the hard disk IDE interface, press the appropriate numbers to select the appropriate port hard drive, after the port will be recorded in/CFG directory MHDD.CFG file, 1 represents the IDE1 at primary, 2 of 3 from the IDE1, IDE2 mouth, says 4 represents the IDE2 estuary from, the next time you enter the mouth after MHDD became the default port, edit the file to change this value to MHDD.CFG can change the default port of detection MHDD. So, if you enter after you press F2 prompt MHDD DiskNotReady, describes the current hard disk not received in the last MHDD default port, you can use the PORT command select hard disk (or change MHDD.CFG file).
CX: kunteng CX and LCT (LA, LB, LC) series hard disk seek test, you can test both the hard drive of the Philips TDA5247 chip stability (because quality is not good 5247 chip frequently seek-time most plausibly). Press the ESC key to stop. This command can also be used on another hard disk, it is mainly through frequent random seek to upgrade the hard drive motor driver IC temperature to test the hard drive in strong load stability.
WAIT: waiting for hard position.
STOP (hotkey Shift + F4): closes the drive motor.
IBME: View IBM hard drive defect table (P-LIST). At this point to record a large amount of data, defects in the larger the table, the resulting file (IBMLST directory), if there is a floppy disk so MHDD, there might be insufficient space;
FUJLST: view Fujitsu hard drive defect table (P-LIST). At this point to record a large amount of data, defects in the larger the table, the resulting file (FUJLST directory), if there is a floppy disk so MHDD, there might be insufficient space;
MAKEBAD: artificially in a specified region manufacturing bad road. Note that the generated bad track is difficult to repair.
RANDOMBAD: randomly in the hard drive of the individual local produce bad track, press the ESC key to stop the build. Note that the generated bad track is difficult to repair.
BATCH (hot key F5): batch.
R (key F3): hard reset. For example, use the PWD password, enter into force immediately in order for the password, you can use this command.
FUCKFUJ, KILLFUJ, AKILLFUJ: are deliberately undermine Fujitsu hard disk command must be used with caution, the hard drive will be completely damaged beyond repair. A all normal Fujitsu hard drive, use FUCKFUJ command, only one or two seconds, it prompts the destruction was successful, after restarting, even the post action disappeared, motherboard, hard drive not detected completely scrapped.

SCAN (key F4): disc surface scan, you can use a specific pattern to fix the bad sectors, including:
[Scanin: CHS/LBA]: CHS or LBA mode scanning. CHS only on the old hard drive 500M following.
[StartingCYL]: set start scanning of the cylinder.
[StartingLBA]: set start scanning of LBA values.
[Log: On/Off]: is written to the log file.
[Remap: On/Off] (re): whether to fix the bad sectors.
[EndingCYL]: set termination scanning cylinder
[EndingLBA]: set termination scanning of LBA values.
[Timeout (sec)]: set the timeout value from 1 to 200, the default value is 30.
[AdvancedLBAlog] (Advanced LBA log): this item does not support.
[Standbyafterscan]: scan is finished off the hard drive motor, you can then enable SCAN scanning is finished, the hard drive to automatically cut off power supply, but host or powered (belong to duty).
[Loopthetest/repair]: loop detection and repair, primarily for repeatedly fix refractory bad road.
[EraseWAITs] (removing the wait): this is primarily used to repair the bad road and repair effect better than REMAP, especially IBM hard disk bad road is the most effective, but it is necessary to pay attention to the repaired parts of the data is to be damaged (because each delete EraseWAITS is 255 sectors). EraseWAITS time default is 250 milliseconds, the value can be set range from 10 to 10000. To set the default time, you can open/CFG directory MHDD.CFG file, modify the project to change the numerical EraseWAITS. This number is used to set the MHDD determine bad road read time value (that is, when a sector block read if reading time reaches or exceeds this number, just think that block the bad road, and start trying to repair), under normal circumstances, you do not have to change this value, otherwise it will affect the bad road defined and fixed effects.

The first line of the screen the left half for status register, the right half is the error register; in the middle of the first line of the screen (in the BUSY and AMNF) there is a blank space if the hard drive is combined with a password, which displays the PWD; if the hard disk has done with HPA, shear, which displays the HPA;

The second line of the screen the left half of the current hard disk's physical parameters, while the right half is the location of the current scanning;
Corner of the screen to Start the timer, that begin scanning time, Time that is consumed by the End of time, that is expected to end after the end of time, will then display indicates TimeCount, spent many long time;

In the scan, each long square representing 255 sectors (in LBA mode) or representative of 63 sectors (in CHS mode);
The scanning process may, at any time, press ESC key to stop;

Square from top to bottom then expressed from normal to abnormal, read and write speed from fast to slow. Normally, you should only appear first and the second grey squares;

If there is a light grey square (the third square), on behalf of the Department read time-consuming;

If a green and Brown square (the third and fourth square), the representative here read the exception, but it does not produce a bad road;

If a red square (sixth, and last one block), you represent to read here, will produce bad road;

If a question mark?, here to read errors, have serious physical bad road, cannot be repaired.

Note 1: some read and write speed slow hard drive if you use the F4SCAN scan MHDD and EraseWAITS open you can see, or even a lot W or across many colorful square, this shows that the reason why this type of hard drive read/write speed is slow, it is because a large number of disk sectors flawed, resulting in a read-write each sector will take a long time, integrated together led to an entire hard drive read/write speed slow.

Note 2: older hard disks (2, 3G following) as a result of lower performance, slow, so detection is seldom F4SCAN appear first square, and the second and third square, or even a fourth square (green box), this is the result of the old hard drive read/write slow, did not indicate which sector read write exception.

In the scan using the arrow keys and the flexibility to control the scanning process, much like VCD player: ↑ fast forward 2%; ↓ ← back 2%; back 0.1% → fast forward 0.1%. Flexible use of arrow keys can be unstable and bad track stubbornly section repeatedly scan and repair;
Work environment in DOS. Note, do not put in the required detection mhdd and fix hard disk, in addition, mhdd cannot open a write-protected floppy disk, hard disks and the CD correctly.

Run mhdd, mhdd first have to detect all the hard drives in the system and gives the connection diagram. We at any time you can press "shift + f3" key to rescan the hard drive status.

Select the hard disk, you enter the main interface mhdd. Top acts status line, mainly shows busy, wrft, amnf, such as hard drives and tonf (or hard drive a sector) or the current status of the software. In the status line below the current hard disk heads, cylinder and sector, and other parameters. Further down the list of all available mhdd command.

For the convenience of everyone, specially recognized by the mhdd to bad road is divided into three categories:

1: repair processThe green icon in the following, (a small green icon can also be repaired)
2: maintenance process green icon and red icon;
3: repair process of traditional character, w, and a small amount of? no.
Scan command for disk surface media scan and repair. Mhdd will retain capacity from out of the same capacity in the sector to replace the newly discovered bad sectors, and the bad sectors of physical address write g-list table. Therefore, the total capacity of the hard drive will not be reduced. The repair method is based on the underlying hardware. Mhdd and not through the motherboard's BIOS to control the hard disk, instead of directly reading the hard drive of all physical sector.

After running the scan command will report the current mhdd first hard drive model number, serial number, firmware version, supports data transfer mode parameter (to run the same is true of other commands), and then enter the scan status.

In scanning the hard drive in the former, we must also set the scan configuration. The main options are scanning the addressing mode (lba or chs), the starting and ending cylinder and sector, timeout time, clear time limits, and whether or not to repeat scan repair. In order to achieve the outcomes, the proposed open remap (bad block remapping), loopthetestrepair (repeat scan repair) and erasewaits etc option. Set is completed by the "f4" to start the disk scan.

Scan, on the right side of the screen will display the status of the disk surface various statistics. The "?" in the upper gray block indicates that the disk surface normal and color block represents the disk space with potential factors of instability, especially red block, you can easily convert my physical bad road. The "?" following status indicates that the disk media damage or has a bad block.

These are just some of the bad road less hard drive, this method of repair range: (xijie, Fujitsu, ibm, kunteng, Maxtor, Western Digital, ibm laptop hard drive) and the rest like Samsung or something unknown, never met. Pending friends to study.

Fix success rate (1 class bad track more than 90 percent, 2, 3, zero percent) Similarly, the first press SHIFT + f3 to scan the hard drive and select, press the F4 key, first with the general pattern scan again, and then use advanced mode to sweep a variable by selecting lba mode, remap keys off, off, and the remaining loopthetestrepair item which has been on, select the ctrl + enter to perform the scan, the scan is complete, perform the above operation, the chs mode off, erasewaits loopthetestrepair items off the remaining items items selected on the select is finished, perform the scan, ok!!!

We all remember not to directly use advanced mode to scan some friends in order to accord with the Advanced mode directly on the hard drive, this approach is wrong, if the direct use of the Advanced mode of the sweep, a good is not the case, then it is helpless mhdd, either can't drive or bad road cannot be repaired)

Fix success rate (1 class bad track more than 90 percent, 2 types of bad road 70, 3 types of bad road, 11%)
Following this approach, the impatient friends don't have to look at. Ibid., first press SHIFT + f3 to scan the hard drive and select, press the F4 key, first with the general pattern scan ten times over, and then use advanced mode to sweep a constant, specific methods in general mode items selected on, loopthetestrepair scan at least 10 times, the esc to exit the repeat, select Advanced mode to perform the scan, ok!!!

Fix success rate (1 class bad track more than 90 percent, 2 types of bad road 80, 3 types of bad road, 60%)
The above methods on?, and w bad track repairs seems not too perfect, now we use some commands mhdd auxiliary and support, ibm, Fujitsu, Western Digital hard drive these defects can be viewed, it's a good idea to perform ibme, fujlst, command, and then perform a general pattern scan, scan-to-w or difficult to repair these bad road, press ESC to exit, use the commands and makebad randombad bad road marking cyclic operation, bad road so you can mark bad sector, mark after performing advanced scanning modes. Also modify the hard drive capacity of law, you, for example, IBM's low cell program in a can to hard drive capacity, low cell friends should know. Here, we put the hard disk capacity to the smallest (minimum here is not, and 0m or 1m is hard drive capacity of 100 m bits, such as the replaced 100m 10g, is re-routed 200m 20g), and then use scan repair mhdd;

Then use the rhpa and mhdd nhpa recover actual capacity to conduct the scan, then changed to hard drive capacity, continue to scan and restore volume scanning, finally put the hard disk to its original size for advanced scanning again ok ~!!! and mhdd and many repair software can be used with very good results

Do you like hddreg, hddl, hddspeed can be very good and mhdd used. There are many more methods to wait for everyone.
　　　
Aerase command can make case-by-sector zero processing, but speed will be slow.

Rhpa and nhpa command: you can display and restore hard drive respectively of all true capacity.
And noise, 127-level (0-126) for the designation, "126" represents the highest performance, but at this point the biggest hard drive noise. Note the aam command requires a hard drive can support automaticacousticmanagement technology.

Rpm command to detect the hard drive speed, however some drives do not support this command.

Randombad and makebad command: you can strong behavior some sector of a hard disk with bad sectors.

Ibme and fujlst command: you can view the ibm and Fujitsu hard drive defect list.
Pwd, unlock and dispwd command: you can add to the hard drive, this drive is unlocked to join password very strange, but be sure not to forget the password (if really forgot or solutions you can use the hard drive locks the hdlock hard and then lock once and then use it's own unlock and dispwd decryption, die Madang live horse medicine chant)
First of all to repair the hard drive connected to the hard disk transfer on IDE2 route master, and then run in DOS MHDD, in the main interface MHDD, top acts status line, mainly shows BUSY, WRFT, AMNF, such as hard drives and TONF (or hard drive a sector) or the current status of the software. In the status line below the current hard disk heads, cylinder and sector, and other parameters. Further down the list of all available MHDD command.

First run the scan command will report the current MHDD first hard drive model number, serial number, firmware version, supports data transfer mode, and other parameters.
Scan command: for disk surface media scan and repair. MHDD will retain capacity from out of the same capacity in the sector to replace the newly discovered bad sectors, and the bad sectors of physical address write G-list table. Therefore, the total capacity of the hard drive will not be reduced. The repair method is based on the underlying hardware.

MHDD and not through the motherboard's BIOS to control the hard disk, instead of directly reading the hard drive of all physical sector. In scanning the hard drive in the former, we must also set the scan configuration. The main options are scanning the addressing mode (LBA or CHS), the starting and ending cylinder and sector, timeout time, clear time limits, and whether duplicate scanning/repair.

In order to achieve the outcomes, the proposed open remap (bad block remapping), Loopthetest/repair (repeat scan/repair) and EraseWAITs etc option. Set is completed by the "F4" to start the disk scan.

Scan on the right side of the screen will display the status of the disk surface various statistics. The "?" in the upper gray block indicates that the disk surface normal and color block represents the disk space with potential factors of instability, especially red block, you can easily convert my physical bad road. The "?" following status indicates that the disk media damage or has a bad block.

If zero road bad la, mhdd, can also be built in concrete repair process to use normal mode scanning several times, and then use advanced mode to scan. This set of instructions is OK.
Operating environment: DOS
Note: do not use MHDD where you want to test hard disk run; run-time need to record data, you cannot write protection on other CD's MHDD running on the device.

Ver3.9 version activation code = (pccode) * 2 + 1

Command (in the parenthesis is the shortcut key):

Port (SHIFT + F3) select hard drive
I (F2) reset hard drive parameters, and all the initialization
Id harddisk measuring, including hard drive capacity, heads, sectors, SN serial number,
Firmware firmware version number, numerical LBA
Test the hard drive speed rpm
Init (F3) disk initialization
Scan (F4) hard drive scan switch parameter (ON/OFF): Log, LoopTest/Repair,
Spindownafterscan、
Remap, EraseWAITs (the latter two options not ON)
Note: SCAN to perform a normal scan (that is, only open LoopTest/Repair option) several times, and then do one of the advanced scanning (except EraseWAITs options are enabled), fix bad road 1000x greater .EraseWAITs option is primarily for IBM disk


Change the hard disk size hpa
The rhpa recovery original dish size
Nhpa show all hard disk space
Cls screen clearing
Pwd password
Unlock Unlock
Dispwd remove password, if you want to use the unlock, but also know the password
Quick erase erase
Fasterase advanced erasure, slow
Makebad continuous tag bad road but not write G table (don't use this feature, easy to be good disk becomes bad disk)
(Want to restore it and then earse once)
Randombad random tag bad road, with makebad
Aam reduce hard drive running sound, disk performance while reducing,
P Max (highest), M is the smallest (minimum performance)
smart(F8)
SmartON, smartOFF, smartAAS (allow/prohibit property is automatically saved), smartATT (read property), smartData (read data), smartTest (offline immediately test)
Wait waiting for hard position
Stop (the SHIFT + F4) to stop the test, turn off the hard drive motor
Cx can test kunteng CX and LCT series hard drive 5247 chip stability
Pciscan save PCI bus images
Clear the MBR, upcoming clrmbr LBA0 sector Ching zero fdisk use entire disk capacity to establish a primary partition
(Have a hard drive with data, will be the Commission's original MBR partition table, use this function)
Exit (ALT + X) exit

The top row left half of the State of the registers (spare capacity in conformity with the original capacity will display the HPA):
ERR back results for errors, and appears in the upper-right corner of the screen
INDX
CORR
DREQ hard drive and the host (PC) the exchange of data
DRSC hard disk analyzing adoption
WRFT write errors
DRDY find hard drive
BUSY hard disk busy and no response to the instruction

The top row and right half of the scan status:
AMNF address mark errors
T0NF0 tracks not found
ABRT directive is aborted
IDNF sector marks errors
UNCR checksum error, also known as the ECC errors
BBK bad block flag errors

Bad road shield to G table:
①SMARTON、SMARTAAS、SMARTATT；
② run the SCAN, the option is set ON, REMAP: Loopthetest/repair: ON, a small amount of bad road to join G table, a lot of bad road or PC3000;